Results 71 to 80 of about 4,017 (247)

Smart sensing metasurface with self-defined functions in dual polarizations

Nanophotonics, 2020
For the intelligence of metamaterials, the -sensing mechanism and programmable reaction units are two important components for self-recognition and -determination. However, their realization still face great challenges.
Ma Qian, Hong Qiao Ru, Gao Xin Xin, Jing Hong Bo, Liu Che, Bai Guo Dong, Cheng Qiang, Cui Tie Jun   +7 more
doaj   +1 more source

Programmable metasurface applied to antenna measurement [PDF]

Electronics Letters, 2019
The authors propose a novel method for significantly reducing antenna measurement time and increasing the efficiency of collecting the data which most is relevant information. They apply methods from compressed sensing which reduce redundancy in the antenna measurement, i.e.
Liang Zhang, Tianting Wang, Fei Wang, Yang Liu, Xianliang Wu   +4 more
openaire   +1 more source

Terahertz Chiral Metamaterials Enabling Broadband Polarization Conversion Using Polarization Guiding Effect

Advanced Materials Technologies, EarlyView.
A broadband terahertz polarization rotator consisting of twistingly stacked silicon–air metagratings is designed based on the polarization guiding effect and experimentally shown to achieve 90° linear polarization rotation for both TE and TM incidences.
Yun‐Seok Choi, Tae Gwan Park, Antoinette J. Taylor, Hou‐Tong Chen, Abul K. Azad   +4 more
wiley   +1 more source

Programmable topological metasurface to modulate spatial and surface waves in real time

Nanophotonics
We propose a programmable topological metasurface to integrate intelligent modulations of spatial and surface waves. A general design method is presented to design the programmable metasurface elements with PIN diodes. The surface waves can be controlled
Xiao Qiang, Ma Qian, Ning Yu Ming, Chen Long, Liu Shuo, Zhang Jingjing, You Jian Wei, Cui Tie Jun   +7 more
doaj   +1 more source

Reconfigurable Intelligent Surfaces for Wireless Communications: Principles, Challenges, and Opportunities

, 2020
Recently there has been a flurry of research on the use of reconfigurable intelligent surfaces (RIS) in wireless networks to create smart radio environments.
ElMossallamy, Mohamed A., Han, Zhu, Li, Geoffrey Ye, Seddik, Karim G., Song, Lingyang, Zhang, Hongliang   +5 more
core  

Reconfigurable Intelligent Surfaces for Energy Efficiency in Wireless Communication

, 2019
The adoption of a Reconfigurable Intelligent Surface (RIS) for downlink multi-user communication from a multi-antenna base station is investigated in this paper.
Alexandropoulos, George C., Debbah, Mérouane, Huang, Chongwen, Yuen, Chau, Zappone, Alessio   +4 more
core   +1 more source

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

Advanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón, Víctor Anthony García Rivera, Stéphan Cagnon, Souleymane Toubou Bah, Younès Messaddeq, Euclydes Marega Junior   +5 more
wiley   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

Programmable Amplitude‐Coding Metasurface with Multifrequency Modulations

Advanced Intelligent Systems, 2021
Recently, programmable metasurfaces have aroused great attention for various applications such as beam manipulation, wireless communication, and holograms by modulating the spatial phase or amplitude.
Qiao Ru Hong, Qian Ma, Xin Xin Gao, Che Liu, Qiang Xiao, Shahid Iqbal, Tie Jun Cui   +6 more
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source